Door closer



May 12, 1925.

J. O. NASLIN DOOR CLOSER Filed Oct. 23, 1923 Patented May 12, 1925. I

UNITED S'IT'A'VTES JOHN D. NASLIN, OF SEATTLE, WASHINGTON.

DOOR CLOSER.

Application filed October 23, 1923. :Serial N10; 670,280

T 0 all lu/ 10m it may concern:

Be it known that I, Jenn O. NAsLiN, a citizen of the United States, .residing at 41 5 TaylorAvenue, in the city of-Seattle,county of King, and State of Washington, have in vented a new and useful-Door Closer; and I do her-by declare thatthe following -is a full and exact description thereof, reference being had to the accompanying drawings and the characters and references marked thereon. I

My invention relates to a door closer, by which a door and the like, isrendere'd selfclosing with less spring-strainand,the wellknown annoyance of slamming, almost entirely eliminated; and, besidesbeing simple in construction and durable,,it is adapted for right and left-hand swinging doors; and for both sides thereof, but operates more satisfactorily on the side thereof facing the jamb.

I attain these objects by the mechanism described herein, and illustrated in the accompanying drawings, wherein-Figure 1 is a view of a door, showing the position of the device thereon, and of easing 4 below, as seen from the front. Figure 2 is a top view of the device, insolid lines when the door is closed, and in dotted lines when it is swung wide open to the wall. Figure 3 is a top view of the counterbalance. and Fig ure 4 is a front view thereof. Figure 5 is another top view of the device, showing the straight shape .of the counter-balance, by solid lines when the door is closed, and by dotted lines when it is swung open to the wall; and Figures (Sand 7 are front and side views of the curved portion l of the counter-balance.

In these. figures the same letters and numerals refer to similar parts.

Letter A indicates a-door, B ,a casing, C a j amb and D aihinge; and are named parts inthe claims.

The objects attained by this device are somewhat similar to those attained by my previous inventions, patented October 14, 1919, and November 2, 1920; but the constructions and combinations of this device has no comparison with the former; in some respects it slightly resembles the latter; it is, however, simpler and less expensive to manufacture, in that it contains'fewer parts different from the former. The deviceiconsists mainly of an ordinary spiral, ortension spring in combination with a counterbalance, indicated by 1?, which maybe constructed n various forms, :such as a straight arm -or bar, with pivot means at-Y v tacha-ble to adoor, and-means for spring,- and balance-arm connections, ashereinafter described. But such aistraightcbalance-is, however, not so; practical as a counter-halance, such as shown in Figures 2, :3 aud t) which is pivoted at 2qto a bracket 2; which by means of screws inserted through holes 2", Q yis fastened onto a door, ,nearithe hinged edge thereon-so that the said balance, when connected as hereinafter described, can

freely swing with the opening and closing movements of the door.

The shape of ,this balance, beginning ,at

the ,pivoted end thereof, iscnr-ved and-.bent I so as to form a suitable abutment 1,

I l e 7'] against which spring 13 presses and is :pro-

jected away from the side and edge of door A WVlllCll is thereby rendered self closing all the way from an openingswing ofabout a half-circle to closing point. From this curved portion the balance extends outward from the door, forming the projecting means with a plurality of holes at 1, 1?, for the connection of .oneend of springB, and turns into an elbow ,at .1 whence it runs forward in astraight line to the swinging end thereoflat 1"; where is provided one or more holes, so that it ,canbe used for different sizes of doors, which do not vary too much in size, by adapting and connecting one end 5 of balance-arm -5 in oneor another of said Iholes, as may be suitable for the door for which the balance is used. The other end 5" 0f which is connected to the j'amb I C at 5. Thus forming the means for main- 7 taining the said balance in positionagainst the tension'of spring 3, as maybe required, when the latter is connected to the balance in one or another of holes 1", 1 therein, and

to the door at 3. Thereby the door isren deredself-closing with less spring-strain and a firmer closure, than when the said spring is directly connected to the door-and to the ,jamb. For by this device spring 3 is carried with the door during the latter3s opening and closing movements, wherefore, by such a combination, said spring is not stretched so far whenthefdoor swings'open, as when connected directly to the jamb at 59. Vherefore it isevidentlyclearthat, by the use of this balance, said spring maybe stretched farther at the closing point of the door, and still become'less strained when the door swings open and canalso be shorter, than when directly attached to the jamb,as

7 previously stated. Furthermore, by the use Figure 5. 2e

' increased more at its opening swing, thanof this device such leverage is produced that, when the said arm and the said spring are about in line with each other, the said spring will hold the door closed without any connection to it at 3 but only by stretching it with the hand in the direction shown by solid lines in Figure' 2,vwill the spring hold the door closed. By the use of a straight balance, with only a bent and curved portion atl, (see Figurefi) the swing and closure of the door 1s not so easy and perfeet, as when a balance 1S used, as shown 1n Figures 2 and 3; where'it is seen how the endiof the'balance at 1 1 is positioned much closer to the door, than as shown in And it is for this reason that, by the use ofa balance as shown in the last named figure, the tension of spring 3 is lessened at the closing point of the door; but

by the use of a balance, as indicated Figures 2 and 3. WVhereby, it of proper size and form,- with proper adjustments, and springconnections, as shown and specified, a door can be rendered self-closing in an easy-going manner without any slamming.

From the foregoing it may be understood,

that thesize of this balance and spring should correspond in sizeas nearly as possible to the size anddimension of the door, for wh ch they are to be used, but a balance and a-spring made for a large door can be used for a smallerone, if not too great a difference exists, by merely shortening and connectin arm 5 in some hole at 1 1 osi- D J v tioned nearer to the door; and as to a certain degree the effect of the. tension of spring 3 on the door, depends upon the pitch or projection of the former from the latter, the tension of sa d spring may,'consequently, be increased or decreased by it being connected in one or another in holes 1 1?,nearerto,

- or farther from the door forwhich it is Ifor obtaining more or less tension used'. 'The tension or" said spring can also be adjusted by moving its'rastening at 3 one way or another, or merely turning rodhook 3 at that point, as may be required 7 for the properclosing of the door. I

I have provided a roll orcasing, whereby to enclose and shield spring 3, that should be of suitable form and dimension for the free movement therein of said spring; and it has the end near 8 contracted about rodhook 3*, so as to remain stationary at that point. While the other end thereof is left open, for the inward and outward'movements of said'spring, or hook 3 when said spring is expanding andcontracting, during the opening and closingmovements of the door.

' It maybe possible that thisdevice can be 'tion to a point suitable for balance-arm conconstructed in various other forms, than what I have herein described, without change in principle, wherefore, I hereby reserve the right to use all other forms of constructions, which involve the same principlesv as herein specified.

What I claim. is: a e 1. In a door closer, a counter-balance having a curved end adapted for spring-abutment and pivoted to a hinged part near its hinged edge, an outward projecting swinging end adapted for balance-arm connection, and an intermediate portion adapted for spring connection, spring-means actuatingv the closing movements :of' said part, and means for maintaining said balance against the said spring-means." l

2. In a door closer, a counter-balance having a pivoted end curved for spring-abutment and positioned upon a hinged part nearits hinged edge, an intermediate portion extending outward from said abutment and adapted for spring-connection, and a swinging end extending forward from said pornection, an arm connectingsaid balance to a stationary part, and a spring connected to said portion and said hinged part, whereby the latter is rendered self-closing.

3; In a door closer, a counter-balancehav ing a pivoted end adapted for spring-abut ment, a swinging end adapted for balancearm connection, and an intermediate portion adapted for spring-connection, pivot-means connecting said balance to a-hinged part near its hinged edge, spring means for a'ctuating the closing movement of said part,

and a stationary part, whereby the said hinged part is rendered self-closing.

5. In a door closer, a counter-balance having one end adapted for spring-abutment and pivoted to a hinged part near its hinged edge, the forward extending-swinging end of which is adapted for balance-armconnection, and the intermediate portion of which is adapted for spring-connection, spring-means actuating the closing movements of said part, a casing carried by said means and a balance-arm for maintaining the said balance against the tension of-said spring-means, as for the purpose shown and specified. I

6. In a door closer, a pivoting bracket positioned upon a hinged part near its hinged edge, and a counter-balance having a curved end adapted for spring-abutment and pivoted to said bracket so as to reciprocately swing With said part; the intermediate portion of said balance being extended outward from said abutment to a distance adapted for spring-projection, With a plurality of holes for spring-connection, and the swing ing end thereof being extended i'erward to a distance suitable "for balance-arm connection, for which it is adapted, a spring connected to said portion and said part so as to actuate the latters closing movement, a balance-arm connected to said end and to a stationary part so as to maintain said balance against the tension'o'f said spring, and a casing inclosing said spring, with room and openings for-its movements. I

JOHN O. NASLIN. 

